Biogeochemical processes and buffering capacity concurrently affect acidification in a seasonally hypoxic coastal marine basin

Hagens, M.; Slomp, C. P.; Meysman, F. J. R.; Seitaj, D.; Harlay, J.; Borges, A. V.; Middelburg, J. J.

doi:https://doi.org/10.5194/bg-12-1561-2015

Articles | Volume 12, issue 5

https://doi.org/10.5194/bg-12-1561-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Low oxygen environments in marine, fresh and estuarine...

https://doi.org/10.5194/bg-12-1561-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 12, issue 5

Research article

|

11 Mar 2015

Research article |

| 11 Mar 2015

Biogeochemical processes and buffering capacity concurrently affect acidification in a seasonally hypoxic coastal marine basin

M. Hagens, C. P. Slomp, F. J. R. Meysman, D. Seitaj, J. Harlay, A. V. Borges, and J. J. Middelburg

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Final revised paper (published on 11 Mar 2015)
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Preprint (discussion started on 18 Nov 2014)
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Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC C7213: 'Review of Hagens et al', Anonymous Referee #1, 09 Dec 2014
- AC C7292: 'Reply to: 'Review of Hagens et al'', Mathilde Hagens, 11 Dec 2014
RC C7883: 'Review comments on Hagens ms', Wei-Jun Cai, 07 Jan 2015
RC C7941: 'Review of the paper by Hagens et al. (Biogeochemical processes and buffering capacity concurrently affect acidification in a seasonally hypoxic coastal marine basin)', Helmuth Thomas, 07 Jan 2015
AC C8534: 'Reply to RC C7883 and RC C7941', Mathilde Hagens, 05 Feb 2015

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Mathilde Hagens on behalf of the Authors (05 Feb 2015) Author's response Manuscript

ED: Publish subject to technical corrections (18 Feb 2015) by Christophe Rabouille

AR by Mathilde Hagens on behalf of the Authors (19 Feb 2015) Author's response Manuscript

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Short summary

This study looks at the combined impacts of hypoxia and acidification, two major environmental stressors affecting coastal systems, in a seasonally stratified basin. Here, the surface water experiences less seasonality in pH than the bottom water despite higher process rates. This is due to a substantial reduction in the acid-base buffering capacity of the bottom water as it turns hypoxic in summer. This highlights the crucial role of the buffering capacity as a modulating factor in pH dynamics.